Under Siege: When the USS Missouri welcomes aboard entertainers for the battleship's last voyage, the visitors throw a party, a war party. Led by a rogue CIS operative (Tommy Lee Jones) and a turncoat officer (Gary Busey), they're killer-elite commandos out to hijack the ship's nuclear arsenal. They overpower the crew. Except one man. 'I'm just a cook', that man says. But he's a cook with a recipe for action. He's ex-Navy SEAL and decorated combat operative Casey Ryback (Seagal).

Under Siege 2: A renegade electronics wiz (Eric Bogosian) has seized the sleek Grand Continental passenger train, transforming it into a rolling command unit for an awesome weapons satellite. But the one passenger who eludes capture is Ryback. The train is now a battleground, the satellite is locked onto its target and an oncoming freight train hauling gasoline is headed toward the Grand Continental. Can Ryback thwart the siege in time? All aboard!